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SSH ISO 6851:2000

Photography — Processing waste — Determination of total amino nitrogen (microdiffusion Kjeldahl method)

Jan 1, 2000

General information

60.60     Jan 1, 2000

DPS

DPS/KT 230

International Standard

37.040.30     13.030.30  

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Scope

This International Standard specifies a method for the determination of the total organic nitrogen, as well as any
ammoniacal nitrogen, present in photographic processing wastes by the Kjeldahl method.
Total Kjeldahl nitrogen can be determined in photographic processing wastes in the range of 10 mg/l to 200 mg/l as
ammonia, or in the range of 8 mg/l to 160 mg/l in terms of nitrogen. If ammoniacal nitrogen (see ISO 6853) is
determined separately and subtracted, the concentration of organic amino nitrogen can be established.

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PUBLISHED
SSH ISO 6851:2000
60.60 Standard published
Jan 1, 2000

Related project

Adopted from ISO 6851:2001